Improvement in pipe-tongs



f .drilled gratta @wat @Mira n. CRM-mor 'si-IAFFERFARM, DENNIsoN Posr orF1cE,"-'1 ENN Lam Para: No. 93,179, and August s, '1869.

IMPROVEMENT IN PIPE-TONGS.

The Schedule referred to in these Letters Patent andmaking part of the same- To all whom 'it ma/y concern:

Be it known that I, R. GRAIN, of Shaiier Farm, Dennison Post Ofce, in the county of Venango, and State of' Pennsylvania, have invented a new and useful"Im- 'provement in Pipe-Tongs; and 1 do hereby declare My invention has for its object to furnish a simple` convenient, and ei'ective pipe-tongs, which Will seeurely claspand iirmly hold pipes, tubes,or other cylindrical bodies, and, at the same time, willnot injure the articles grasped; and

It consists in* the construction and combination of the various parts of the tongs, as hereinafter more fully described.

A and B are the' handles of 'the tongs, and C `and D are the jaws.

The jaw O is stationary, and is formed solidly upon the end of the handle A.

The j aw O is made curved, and is about, or a little less than three-quarters of a circle, as shown in the figure.

The movable jaw Dis also curved, and is about, or a little less than a quarter of a circle, sothat the .endsv ofthe two jaws, when grasping a pipe of about the same circle as their interior, will meet, or nearly meet, so as to grasp the pipe all around, and thus prevent the pipe from being'injured, as is frequently the case when the ordinary tongs are used.

The concave or inner. sides of the jaws Gand D are toothed, to enable them to take a iirmer hold upon the pipe to be turned.

To the -shank of the jaw D. is attached a band or socket, E, which" lits upon the handle A of the stational-y jaw O, so that the jaw D may be slid back, to

admit the pipe between the jaws,l and again slid forward to grasp the pipe.

To the band or socket E is pivoted theend of the handle B, in sucha position that the end of the han.

dle B, which should be rounded off', may rest against the end of the shank of the jaw D, which should be ooncaved, to lit uponthe said end of the said handle.

rllhe adjacent edges of the handles -A 'and B are grooved, to receive the lever or bar F, the forward end of which is pivoted to the movable handle B, and its rear end' to the stationary handle A, so that by opening or separating the said handles, the bar or lever F j will draw back the movable or sliding jaw D, to open the jaws; and when the handles are closed, the bar F may act upon the said handles as a toggle-joint, to press the movable jaw forward, to grasp the pipe.

The ends ofthe bar or lever =F should be adjustably attached to the handles A B, so that by adjusting their position, the jaws may be adjusted'toigrasp a pipe larger or smaller than the circle of the jaws, as

may be required.

` The sliding jaw D may be operated by other means than the lever, but the lever is preferred as beingsimple, strong, and notliable to get out of order.

' The lever F may, if desired, be connected with the outer sides ofthe handles A B.

Having thus described my invention,

What I claim asnew, and desire to'seeure by Letters Patent, is The combination of the stationary circular toothed jaw U, the sliding circular toothed jaw D, stationary handle A, movable pivoted handle B, band or socket E, and bar or lever F, with each other, substantially as herein shown and described, and for the purpose set-forth.

n. GRAIN Witnesses J. A. GRAHAM, O. 0. CRANE. 

